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Subject: Re: Nice rook endgame - Testposition

Author: Roy Eassa

Date: 09:30:36 08/21/02

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On August 20, 2002 at 22:29:44, Eduard Nemeth wrote:

>Here played two player with an Elo about 2500:

>In this game (with my comments) won black with the nice move 62...Rc1!
>In my comments you can see, that black can win the pawn-ending, allways!
>
>But after an moves "only" with his king, black cannot win!
>
>How many time your program needs, to see that Rc1 this game win?
>
>Here this position after move 62, white:
>
>[D]R7/8/6p1/5p2/5P1p/3k3P/p4KP1/r7 b - -
>
>Eduard


Beautiful!  Here's a little analysis, with help from Fritz:

1...Rc1! 2.Ra3+ Rc3 3.Rxa2 Rc2+ 4.Rxc2 Kxc2 5.Ke2 Kc3 6.Ke3 Kc4 7.Ke2 Kd4 8.Kf3

   [8.Kf2 Ke4 9.g3 Kd3 10.Kf3 Kd2 and Black wins as below]

8...Kd3 9.g3 Kd2!

   [9...hxg3? 10.Kxg3 Ke3 11.Kh4! =]

10.Kf2

   [10.gxh4 Kd3 11.Kf2 Ke4 12.Kg3 Ke3 -+]

10...Kd1! 11.Kf3

   [11.gxh4 Kd2 12.Kf3 Kd3 -+]

11...Ke1 12.Kg2 hxg3 13.Kf3 g2 14.Kxg2 Ke2 15.Kg3 Kf1! -+


(I just compared this to your analysis, and they are nearly identical in the key
areas.)



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